Loom-shuttle



(No Model.)

R. W. PORTER.

LOOM SHUTTLE.

No. 249,857. Patented Nov. 22,1881.

M-OZW ing by the attendant.

rota,

PATENT ROGER W. PORTER, OF NASHUA, NEW HAMPSHIRE.

LOOM-SHUTTLE.

SPECIFICATION forming part of Letters Patent No. 249,857, dated November22, 1881,

Application filed August 24, 1880. (No model.)

To all 'whom'tt may concern:

Be it known that I, ROGER W. PORTER, of Nashua, in the county ofHillsborough and State of New Hampshire,have invented a new and usefulImprovement in Loom-Shuttles, of which the following is a specification.

The object of my invention is to provide a means whereby the springwhich keeps the shuttle-spindle in its proper working position, and alsoholds it steady when thrown up out of said position, maybe attached tothe shuttle without the aid of a screw, or without the necessity of itsbeing perforated, and thereby weakened at the point where the screw isinserted, and at the same time it may be hung pendent within a cavity ofthe shuttle-body and in direct contact with the head of theshuttlespindle, and thus, while it acts directly against the head of thespindle, it is so located that in event of breakage it cannot fall downinto the loom and cause damage, the arrangement of the spring in apendent position also affording greater flexibility than when arrangedin a horizontal position, with one of its limbs resting fiatwise upon abase-support, while its other limb acts upon an auxiliary spring, andthis pendent arrangement also admitting of its free limb acting directlyupon the head of the spindle.

Another object of my,invention is to provide means whereby the springwhich bears on the head of the spindle, and is pendent within a cavityof the shuttle-body, may be made to serve as an indicator to the weaveror loomattendant, and indicate the fact that the spindle is not heldwith sufficient spring-force in its proper working position.

Another objectot my invention is to provide means whereby thespring-head of the spindle, and also the pivot of the spindle, may bekept lubricated for a long time without frequent oil- My inventionconsists, first,in a U or analogous double-linibed spring provided witha sharp entering-spur on the upper end of its rear limb, in combinationwith a shuttle-body provided with a cavity adapted for the reception ofthe said spring, and with the spindle, this combination being such thatthe spur of the spring enters the back wall of the aforesaid cavity. Thespring hangs pendent in the cavity, and its front li nib bears directlyagainst the head of the spindle.

Second, in the combination of the doublelimbed spring formed of two ormore pieces, each of which has a sharp entering-spur on the upper end ofthe rear limb, with the shuttlebody provided with a cavity in its upperside, and with the spindle, this combination being such that the spurson the pieces forming the spring enter the back wall of the cavity. Thespring-pieces are pendent in the cavity and bear directly upon the headof the spindle,and are held from falling into the loom by the walls ofthe cavity of the shuttle-body, and it also being such that the breakageof one piece of the spring will serve to indicate to the weaver the factthat the spring is not acting with full force upon the spindle, thisindication being perceived by the weaver at the front end of thespindle, such end of the spindle being allowed to move slightly up anddown when the full force of the compound spring is not in play by reasonof one of the pieces being broken.

Third, in a. shutllebody provided with a U or double-limbed pendentspring and with a cavity in its upper sidefor thespriug to hang in, andwith a spindle, against which the spring bears, and with alubricating-sponge or other absorbent material, said sponge being placedwithin thecavity and-between the limbs of the spring, this combinationbeing such that the spring cannot fall into the loom when it becomesbroken, and also that the spring, spindle-head, and its pivotcan be keptlubricated for a long timewithout frequent oiling by the attendant.

In the accompanying drawings, Figures 1, 2, and 6 show perspective viewsof my improved pendent spring in three forms-viz., of one piece, twopieces, and three pieces. Fig. 3 is a vertical longitudinal section of ashuttle with the improved spring applied pendently within an improvedform of cavity in the sh uttle-body, and bearin g directly against thehead of the spindle of the shuttle. Fig. am a horizontal section of theimproved shuttle and spring, the spring being shown formed of twodouble-limbed pieces. Fig. 5 is a longitudinal section of a portion ofthe improved shuttle and spring, the form of the spindle-head and springbeing slightly modified.

The shuttle-body A is provided with a U or other flaring cavity, a, inits head, on the upper side and near its rear end. This cavity is closedin by deep back and side walls, and at its front by a wall of lessdepth. The bottom of the cavity mayhave a plugged passage through it, asshown.

The spindle B is provided with a head, b, and it is pivoted at g to theshuttle-body.

Within the cavity a, and directly in rear of the head of the spindle, aU or double-limbed spring, 0, is placed in a pendent position. Thisspring may be formed of one double-limbed piece, (see Fig. 1,) or of twodouble-limbed pieces, (see Fig. 2,) or of three double-limbed pieces,(see Fig.6.) Therear limb ofthe springO has a sharp spur, d, formed onits upper end, and this spur enters the back wall of the cavity a, andthus fastens the spring in its pendent position, no perforation throughit for a screw or other fastening beingnecessary. The spring stands orhangs pendent within the cavity, and if it should become broken theparts thereof cannot fall down into the loom and cause injury.

It is far more desirable to use two or more double-liinbed pieces thanone, for the reason that if one piece of the two or more used breaks theweakness of the spring upon the spindle will be indicated, and the samebeing perceived by the weaver he will take steps from this warning intime to avoid damage to the weaving operation from the shuttle-spindleflying up on its pivot out of the shuttlebody, and thus the spring ismade to answer as an indicator, as well as a retainer of the spindle inits proper position.

In Fig. 5 the springis modified in form, and the head of the spindlealso. In this plan the spring bears down upon the top of the head of thespindle, instead of against its rear end. This spring is enabled to dothis by having an extension, h, formed upon the free front limb. Theother constructions of spring (shown in Figs. 1, 2, and 6) are far moredesirable than this last'described plan, as there is no possible chancewith the plans 1,2, and 6 01" the broken parts falling down into theloom.

By forming the spring 0 with a spur, d, the weakening of it at the pointwhere the greatest strain comes is avoided, and the spring can be formedof several very narrow pieces and still be fastened in a pendentposition.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. A loom-shuttle which combines in its construction abodyhavingacavity,a, in its upper side, one or more double-limbed springs, (J, on theupper back limb of which a sharp entering and retainingspur, d, isformed, and a spindle, B, having a head, I), or its equivalent, thecombination being such that the spring 0 can be placed within the cavityof the shuttle and behind the head of the spindle, bearing against thespindle, and also can have its fasteningspnr driven into the back wallof the cavity, and by said spur the spring can be held pendent withinthe cavity, substantially as and for the purpose described.

2. The combination of the double-limbed spring, formed of two or morepieces placed side by side, with a shuttle body and spindle, said springbeing placed in the cavity inthe upper side of the shuttle and behindthe head of the spindle, and its respective pieces being held fromfalling into the loom by the walls of the cavity of the shuttle-body,and the breakage of one piece serving to indicate to the weaver the factthat the springis not fully operative, substantially as described.

3. The double-limbed pendent spring provided with the spur d on theupper end of its rear limb, in combination with a shuttle-body having acavity, a, to receive the springin the upper side of its head or rearend, substantially as described.

4. The combination ofthe shuttle-body having a cavity, a, in the upperside of its head or rear end, a double-limbed pendent spring, 0, spindleB, and lubricating-sponge f, sub stantially as and for the purposedescribed.

ROGER W. PORTER. Vitnesses i WM. DOYLE, GEo. H. Baron.

